In The Line Of Duty 4 (Remastered Version) DVD is regionally encoded to Region 3. Please refer to your DVD player's manual and be sure your DVD player plays this DVD when ordering. We cannot accept returns due to region incompatibility. Please contact us before ordering this title if you don't know what region code is.

An innocent Hong Kong immigrant who got involved in drug trafficking kills a killer out of defense in America. Madam Cynthia Khan, who is assigned to investigate the case, witnesses the incident. Local detectives Donnie Yen and Michael Wong are responsible for probing the murder that has escaped to Hong Kong. Finding the case suspicious, Donnie and Cynthia are set up by Michael, and are pursued by the American killer, the Hong Kong underground society and the police